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  • Synthesis of Au@Ag core-shell nanocubes containing varying shaped cores and their localized surface plasmon resonances

    Author(s)
    Gong, Jianxiao
    Zhou, Fei
    Li, Zhiyuan
    Tang, Zhiyong
    Griffith University Author(s)
    Tang, Zhiyong
    Year published
    2012
    Metadata
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    Abstract
    We have synthesized Au@Ag core–shell nanocubes containing Au cores with varying shapes and sizes through modified seed-mediated methods. Bromide ions are found to be crucial in the epitaxial growth of Ag atoms onto Au cores and in the formation of the shell’s cubic shape. The Au@Ag core–shell nanocubes exhibit very abundant and distinct localized surface plasmon resonance (LSPR) properties, which are core-shape and size-dependent. With the help of theoretical calculation, the physical origin and the resonance mode profile of each LSPR peak are identified and studied. The core–shell nanocrystals with varying shaped cores offer ...
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    We have synthesized Au@Ag core–shell nanocubes containing Au cores with varying shapes and sizes through modified seed-mediated methods. Bromide ions are found to be crucial in the epitaxial growth of Ag atoms onto Au cores and in the formation of the shell’s cubic shape. The Au@Ag core–shell nanocubes exhibit very abundant and distinct localized surface plasmon resonance (LSPR) properties, which are core-shape and size-dependent. With the help of theoretical calculation, the physical origin and the resonance mode profile of each LSPR peak are identified and studied. The core–shell nanocrystals with varying shaped cores offer a new rich category for LSPR control through the plasmonic coupling effect between core and shell materials.
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    Journal Title
    Langmuir
    Volume
    28
    Issue
    24
    DOI
    https://doi.org/10.1021/la204684u
    Subject
    Inorganic chemistry not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/172989
    Collection
    • Journal articles

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